IS200VCMIH2BCD Board Card

I. Model Classification

IS215VCMIH2BC: Upper-layer main control CPU board (VME main card, 6U VME standard size), installed in VME rack slot, with front panel 3 IONet network ports

IS200VCMIH2BCD: Lower-layer terminal connection base board (sub-board), inserted under IS215VCMIH2BC, with wiring connected to the on-site I/O terminal board, BCD is the PCB hardware revision batch, compatible and interchangeable with BCC/BEE hardware pins

VCMI Full Name: VME Communications Interface (VME bus communication interface card), specially designed for GE Speedtronic Mark VI heavy-duty gas turbine / steam turbine TMR triple-redundant control system, produced by the original factory in the United States

Hardware Parameters

Main Control Chip: TI TMS320C32 32-bit DSP floating-point processor, 40 MHz main frequency

Storage Configuration: 32KB dual-port DPRAM + 64K×32 SRAM, onboard battery backup memory

Power Supply: DC5V/6A rack backplane power supply, total machine power consumption approximately 3.2W

Interface Configuration (IS215VCMIH2BC)

3 Independent IONet Real-time Ethernet (R/S/T triple redundant network ports): GE proprietary high-speed industrial Ethernet, connects remote I/O racks, main control CPU, HMI upper-level, TMR three-channel independent networking, single network port failure does not interrupt communication

VME Bus P1/P2 Backplane Interface: Controls all IO cards, speed cards, trip cards on the entire rack's VME bus arbitration and data transmission, rack bus Master control

Bottom J3/J4 37-pin wiring socket: Connects to the lower IS200VCMIH2BCD connection base board, extends to the cabinet terminal board

Environmental Conditions: Operating temperature 0℃～+60℃, enclosed installation in the cabinet, universal specification for power plants / refineries explosion-proof cabinets

Core Functions

VME Rack Bus Master: Master control for all CPU cards, IO cards, TRIP trip cards, speed cards on the entire rack's data transmission arbitration, assigns each board's hardware address, without VCMI, all IOs on the rack will be disconnected

IONet System Network Hub: Main control backbone communication of the entire machine, main control instructions issued + on-site DI/DO/AI/AO data transmission, connects local cabinets + remote extended I/O cabinets, supports UDH unit data high-speed link

TMR Triple Redundancy Communication Voting: Three network ports R/S/T correspond to X/Y/Z three sets of redundant controllers, hardware triple-two data verification, single-point channel failure does not affect the unit control logic, does not mistakenly trip the machine

I/O Signal Relay: IS200VCMIH2BCD base board is responsible for electrical isolation and signal routing between the on-site hardwired terminals and the main control board, simplifies wiring and maintenance in the cabinet

Application Scenarios

Heavy-duty gas turbine, steam turbine, combined cycle power plant Mark VI control system main control rack

Large centrifugal compressor units in oil and gas fields, coal chemical power turbine units TMR control system

Communication core rack of power plant steam turbine DEH digital electric control system